US1220718A - Stoking-door for furnaces, &c. - Google Patents

Description

G. F. BIBB.

STOKING DOOR FOR FURNACES; 6L0.

APPLICATION FILED SEPT. s. 1915.

LQQOJWW. Patelitegi Mar. 27,1917.

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STORING-DOOR FOR FUBNA CES, &o.

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Tro in the county of Rensselaer and State of ew York, have invented certain new and useful Improvements in Stoking-Doors for Furnaces, &c., of which the following is a specification.

This invention has particular reference to a stoking door for garbage incinerating furnaces, and the primary object is to provide means for protecting the door proper and its hinge fromcontact with the refuse, and to insure discharge into the incinerator upo n closing thedoor of matter that may become lodged on either movable or fixed portions of door structure when the door is open.

The invention is embodied in a chute forming apron which is movable with the door and when the latter is open directs inwardly the garbage, etc. The improved attachment also fully protects the door and its hinge, all liquid or semi-liquid matter being carried thereby inwardly over the hinge Ian joint so that there can be no leakage and no obstructing of the .hinge. When closing the door, the inward movement of the attachment operates to clear the door ledge of matter lodged thereon, and its own steep inclination when closed results in dislodging any matter that may stick thereon when open.

It is further characteristic of the inven-*.

tion that the improved attachment serves to definethe opening movement of door and holds it in chute-forming position.

In the accompanying drawing, Figure 1 is a view in top plan 0 the door frame and door together with a portion of a furnace or stove structure to which the frame is applied, the door being in open position. Fig.

2 is a vertical sectional view taken on line with 2-2 of Fig. 1. Fig. 3 is a view similar to Fig. 2 with the door in closed position.

Referring to the drawings, 2 designates the outer casing pr jacket of an incinerator,

stove or other llke structure, and secured thereto is the door frame 3 which has the sloping front face 4 through which the door opening is formed. -In the adaptation Speolfloatlon of Letters Patent.

Patented Mar. 2?, Twit.

Application filed September 8, 1915. Serial No. 49,419.

ably sloping inwardly and downwardly in continuation of the sloping ledge 7 of frame 3. a

The door 8 is adapted to close flatly against frame-face 4, being mounted to rotate about a horizontal axis. In the present embodiment this axis is located at the lower side or edge of-the door and is defined by the horizontal trunnions 9 which are mounted in the upwardly open hook-like bearing lugs 10 at opposite sides of frame 3.

An inwardly extending apron is movably mounted on the inner side of the door and consists of the fiat bottom portion 11 having at either side the upstanding wall-forming parts 12. The apron is hinged at its upper end at 13 to the upper portion of the inner side of the door. When the door is open the free portion of apron bottom 11 bears flatly on the inner face of the door, and extends over the hinge joint and onto frame ledge 7. Fluid or semi-fluid matter is thus directed inwardly and prevented from leaking through the hinge joint and from obstructing or clogging the hinge. In fact, all portions of the door are protected, none of the surfaces thereof being exposed to the garbage, refuse or other matter with which the incinerator is charged.

The apron moves freely through the door frame as the door opens and closes, and the bage or other matter with which the in cinerator is charged. Upon moving the door from the open position of Fig. 2 to the closed position of Fig. 3, the hinged apron slides inwardly over ledges 7 and 6 and overhangs the inner edge of the latter at a steep incline, thereby dislodging and directing inwardly any matter that may have become lodged thereon. The door is thus self-clearing each time it is closed.

Walls 12 are notched downwardly at 16 to facilitate removal of the apron-carrying door, to accomplish this, it being only necessary to partially close the door from the position shown in Fig. 2; whereupon sufficient clearance is had for the upward movement of walls 12 to enable trunnions 9 to I clear the open-top bearings 10, thus freeing the door and its apron from the frame.

While the invention is designed primarily as a stoking door for a garbage incinerator,

it be understood that it may be utilized glib other funfinifilcg and stove structures or erevera is required.

I claim 1. .The combination of a door frame, a door for the frame mounted to open into chute-forming positionjan apron movably mounted on the door and extending'into the frame for directing matter thereinto when the door open, and stops on the frame engaged by the apron for holding the door in l open position.

2. The combination of a door frame having its open face sloping in a direction to maintain the door closed by gravity, a stoking door adapted to close against said face and mounted at its lower side to rotate about a horizontal axis, an apron hinged to the inner side of the door and movable through the frame openingas the door opens and closes, and means on the apron for limiting,

the opening movement of the door to provide' a chute.-

3. The combination of a door frame, a door for the frame mounted to swing outwardly and downwardly, an apron having bottom and side walls, the apron hinged at one end of its bottom wall to the inner side.

of the door and with the free portion of the apron entered in'the frame when the door is 0 en, and stop means on the frame engaged y the side walls of the apron for or charging door structurelimiting the opening movement of the door and apron.

4. The combination of a door frame, a

door for the frame mounted to swing out-' -wardly and downwardly into inclined position,

an apron hinged to the upper portion of the inner side of the door and consisting of an imperforate bottom and im erforate at the inner side of the door and hinged to the upper portion of the latter, upstanding walls at oppositesides of the apron movable through the door opening and extending to the top thereof for engaging the frame and limiting the opening movement of the door, the side walls :recessed downwardly to permit the door and the wall carrying apron to In testimonywhereof I afiix my signature in presence of two witnesses.

- GEORGE F. BIBB. Witnesses A 'Cnns'rnn BASCOM,

- JAMES A. GILMAN.

.beelevated suificiently to release the door; from its bearings;

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